
Experience the ultimate crunch with this buttermilk-marinated fried chicken burger. Topped with zesty homemade garlic mayo and fresh vegetables, it's a restaurant-quality meal you can easily recreate at home.
Prepare the chicken: Place the chicken pieces between sheets of plastic wrap and pound to an even 1cm (0.4 inch) thickness. Trim the pieces so they are slightly larger than your burger buns to account for slight shrinkage during cooking.
Marinate: In a large bowl, whisk together the buttermilk, 1.5 teaspoons of salt, and the egg. Add the chicken pieces, tossing to coat thoroughly. Cover and refrigerate for at least 3 hours, or up to 24 hours for maximum tenderness.
Make the Garlic Mayo: In a small bowl, mix the mayonnaise with the minced garlic. Cover and keep chilled in the refrigerator until you are ready to assemble the burgers.
Prepare the Crunchy Coating: In a shallow dish, whisk together the all-purpose flour, cornstarch, celery salt, paprika, cayenne pepper, onion powder, garlic powder, mustard powder, ginger powder, dried thyme, dried oregano, black pepper, and the remaining 0.5 teaspoon of salt.
Create the 'Crunch' Bits: Drizzle 2 tablespoons of the buttermilk marinade into the flour mixture. Use your fingers to rub the liquid into the flour until small, shaggy lumps form. These bits will stick to the chicken and create an extra-crispy texture.
Heat the Oil: Fill a large, heavy-based pot with vegetable oil and heat it over medium-high heat until it reaches 180°C (350°F).
Coat the Chicken: Remove a piece of chicken from the marinade, letting the excess drip off. Press it firmly into the flour coating, ensuring it is completely covered. Shake off any loose excess flour.
Fry: Carefully lower the chicken into the hot oil. Fry for about 2 minutes per side until deep golden brown and cooked through. Do not touch the chicken for the first 90 seconds to allow the coating to set properly. Drain on paper towels.
Assemble: Spread a generous amount of garlic mayo on both the top and bottom of the toasted buns. Layer the base with lettuce and tomato, then add the fried chicken and gherkins before closing the burger. Serve immediately.
For the best results, use a thermometer to maintain the oil temperature at 180°C (350°F). If the oil is too cool, the chicken will be greasy; if it's too hot, the coating will burn before the chicken is cooked. To keep the chicken crisp while cooking in batches, place finished pieces on a wire rack in a warm oven.
